Pet owners have been advised about potential adverse health effects related to two varieties of Premium Edge cat food and several dog chew-toy products manufactured by the Pet Carousel company. In the unlikely event that any of the affected products made it into your home, here's a rundown of the products and what to do if you purchased one:

-- The Diamond Pet Foods company has issued a voluntary recall on some bags of Premium Edge Finicky Adult Cat and Premium Edge Hairball cat foods due to insufficient levels of thiamine, which can lead to gastrointestinal and neurological problems in cats. Bags of those varieties bearing the codes RAF0501A22X 18lb., RAF0501A2X 6 lb., RAF0802B12X 18lb (BB30FEB11), RAH0501A22X 18 lb. and RAH0501A2X 6lb., manufactured May 28 and Aug. 30, were pulled from store shelves in September, according to the company. The Associated Press reports that 21 reports of health problems in cats that consumed the affected food have been reported in New York and Pennsylvania, although the most recent incident was in October; the food was distributed in 18 states along the Eastern Seaboard. Any pet owner who bought an affected product is asked to return it for a full refund at the store from which it was purchased. Concerned customers can contact the company at (800) 977-8797 for more information.

-- Last month, the FDA issued a health alert to dog owners advising them of possible salmonella contamination in pigs' earsand beef hooves sold by the Pet Carousel company. The pigs' ear products were sold under the names Doggie Delight and Pet Carousel. The beef hoof products were marketed using the names Choo Hooves, Dentley's, Doggie Delight and Pet Carousel. Pet Carousel is based in California, but its products are sold nationwide, according to the FDA. No adverse health issues in dogs that consumed the affected products had been reported at the time the alert was issued, but the FDA cautions pet owners to avoid handling them or giving them to pets.

-- PetSmart, which sold the Dentley's beef hoof products mentioned in the FDA's health alert, responded to the salmonella-contamination concerns by issuing a voluntary recall of 14 Pet Carousel products that contain hoof or bone components. These include not just the Dentley's beef hooves, but also several rope toys. Pet owners who bought an affected product are encouraged to return it for a refund or store credit. For a full list of products included in the recall, visit PetSmart's corporate website.